The invention discloses a packet scheduling method and a system. The packet scheduling method comprises the following steps: S1, determining requirements on service quality of each service, wherein the requirements on the service quality comprise jitter requirements; S2, determining a soft deadline for the each service respectively; S3, and determining a sending interval of the each service respectively according to the soft deadline and the jitter requirements of the each service in order to send corresponding services in the sending interval. According to the invention, a packet scheduling service is performed based on the jitter requirements in the QoS standard, the application range of data services is expanded, and scheduling is not needed to be performed by receiving a feedback from a client, so data throughout and resource utilization efficiency of multi-user communications in a MIMO system are increased.本发明公开了一种分组调度方法及系统。所述分组调度方法包括：S1、确定每项服务的服务质量要求，所述服务质量要求包括抖动要求；S2、分别为所述每项服务确定软期限；S3、根据每项服务的软期限和抖动要求分别确定所述每项服务的发送区间，以便在所述发送区间发送相应的服务。本发明基于QoS标准中的抖动要求来进行分组调度服务，扩大了数据服务的应用范围，不需要从客户端接收反馈来进行调度，增加了MIMO系统中多用户通信的数据吞吐量和资源使用效率。

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